The verdict
The D6 is the value tankless pick — Waterdrop's compact tankless RO at $349. Best for buyers wanting tankless without G3P800 premium.
Strengths
- +Tankless 600 GPD at lower price than G3P800
- +Compact under-sink form
- +TDS display in faucet
- +Easy filter swap
Watch-outs
- −Smaller GPD than G3P800
- −Power outlet required
- −Newer product — less long-term data
How it compares
Cheaper tankless. Lower GPD than G3P800. Compact.
Who this is for
At a glance: value-conscious tankless RO buyers.
Why you’d buy the Waterdrop D6 Tankless
- Tankless 600 GPD at lower price than G3P800.
- Compact under-sink form.
- TDS display in faucet.
Why you’d skip it
- Smaller GPD than G3P800.
- Power outlet required.
- Newer product — less long-term data.
Rating sources
Our 4.5 score is the average of these published ratings. More about methodology.
